Curb inlet casting



Aug. 28, 1951 I DEWITT s. CROCKER CURB INLET CASTING Filed March 29,1950 unuuuuuu uuuuuuuul' 1n nu I] an up W uuuuuuun nnnnuuuum m n n U U U[1M] [1}] ig/4 H INVENTOR -DEW|TT S. CROCKER ATTORNEY Patented Aug.28,1951

UNITED STATES PATENT OFFICE I 2,566,120 CURB INLET CASTING De Witt S.Crocker, SpringfieldGardens, N. Y.

Application March 29, 1950, Serial No. 152,590

This invention relates to curb inlets for catch basins of the type shownin my Patent No. 2,473,279, issued June 14, 1949.

The general object of the invention is the provision of an improved curbinlet casting which will integrally unite the side walls of the catchbasin and the sidewalk slab thereof so that the inlet casting willremain fixedly bonded thereto to move therewith as the concretestructure expands and contracts with temperature changes and will notmove relatively to the wall and roof structure of the catch basin undersaid temperature changes.

A more particular object of the invention is the provision of a curbinlet casting whereby the aforementioned general object is attained byangling the end walls of the casting to thereby obviate the need ofprojections extending outwardly from said end walls, as will be morefully described herein with reference to the accompanying drawing,wherein:

Fig. 1 is a perspective view of the improved curb inlet casting;

Fig. 2 is a perspective view of an end portion of a slightly modifiedform of inlet casting;

Fig. 3 is a top view of a catch basin with the improved curb inletcasting in place, being taken sectionally at a point below the sidewalkslab, so that this does not appear therein;

Fig. 4 is a top view similar to Fig. 3, but taken for most part throughthe sidewalk slab, so that a portion thereof appears in section; and

Fig. 5 is an elevational section taken on the lines 5-5 of Fig. 4,through the front, upper corner of the catch basin.

The improved curb inlet casting, generally designated Ill, comprises abase plate H and an upper bar l2, between which may be provided aplurality of intermediate partitions l3, shown as disposed normal to thebase plate II and upper bar l2 and as integrally united at their lowerportions with base plate I l and at their upper portions, withlongitudinal bar l2. Intermediate partitions l3, of which five are shownin Fig. 1, for exemplification, provide a plurality of wide openings 15in the front of the casting. The partitions l3, as best seen in Fig. 5,are shown as of irregular triangular shape with the base thereof at thefront of the casting and with their apices H rearwardly disposed. Thesepartitions are shown in the drawings as equally spaced from each otherand from the end walls l4l4 of the casting.

The feature of the invention revolves about the character of the two endwalls l4, l4 ofthe cast- Claims. 01. 182-6) ing, Fig. 1, which are shownas having the same triangular configuration as the intermediatepartitions 13, where these are present to complete the contour of thecasting. These end walls l4, l4 flare outwardly from front (i. e. upperbar [2) to the rear. Stated differently, the end walls I4, l4 subtendobtuse angles with the front face of the inlet casting as defined by theupper bar l2 and the forward edge (right edgeas viewed in Figs. 1 and 3)of base plate ll.

It is by reason of this unique disposition of the end walls that theimproved inlet casting of this invention integrally unites the sidewalls of the catch basin and the sidewalk slab thereof (and achieves theresults as more fully pointed out in the statement of invention). Thiswill now be explained with reference to Figs. 3, 4, 5, which show howthe improved inlet casting is related to a catch basin. The concreteside walls of the catch basin are designated 9, 9, only a fragmentaryportion at the curb B being shown in Figs. 3-5. The bottom of the catchbasin is designated 1. As best seen in Fig. 5, the aforesaid curb 8forms the front (upper) corner of the concrete sidewalk slab G whichcovers the catch basin, extending between the side walls 9, 9. As alsobest shown in Fig. 5, the curb 8 represents a stepdown from sidewalkslab 6 to the roadway level 5; at the juncture of the roadway and thecatch basin, or, rather, the curb inlet I0, is disposed the guttergrating 4, which is somewhat above, Fig. 5, the subgrade level 3.

The front of the catch-basin (where the curb inlet casting is placed) iscompleted by a front wall 2 of concrete, Which is integrally united, seeFig. 3, with the side walls 9, 9. As best shown in Fig. 5, the frontwall 2 does not unite with the sidewalk slab 6, but presents its topsurface spaced a short distance below the sidewalk slab. After the sidewalls 9, 9 of the catch basin and its front wall 2 arepoured, the inletcasting I9 is placed in position along the front of the basin, with thebase plate I I of the casting resting upon the aforesaid top surface offront wall 2. Thereafter, the sidewalk slab 6 is poured, to unite thecasting in place.

It will be noted from Fig. 3 that, by reason of the aforesaid flaringdisposition of the end walls I4, I 4 of the casting, a portion of theconcrete constituting the sidewalk slab 6 is disposed above, andrearwardly of, the casting, designated Y in Fig, 5, so that the junctureline between the sidewalk slab concrete and the top slanted sides of thewalls, is inclined, as clearly seen in Fig. 5.

When the concrete sidewalk slab expands outwardly under increasedtemperatures (to the right, Fig. 5) its forward, inclined portion Yexerts a forward or frontward pressure uponthe inlet casting l0, causingit to move in the same frontward direction together with sidewalk slab 6and side walls 9, 9 of the catch basin. On the other hand, when the slaband side walls 9, 9 contract rearwardly under reduced temperatures (tothe left, Fig. 3) their forward portions X, X abutting, againstv theflared end walls of the casting, exert a rearward pressure upon thecasting, causing it to move in the same rearward direction as the sidewalls 9, 9 and slab 6.

It will be observed that the angled end walls, It, I4 present the entireand'maximum cross section of the casting for the bonding action, andthat the maximum depth of this cross section is in the plane wherein thelower surface of the sidewalk slab engages the top surface of the inletbasin.

The: end walls [4,. M; are shown. in Fig. 2 as provided with apertures24,. preferably also located in or adjacent the plane-of engagement ofthe side wall slab and the inlet walls. Whenconcrete is poured, some ofit: will lodge in the apertures 24 to. further interlock the castingwith the catch basin in said plane. The curb casting is shown further asprovided with. openings 2f through the base plate H, adjacent the endwalls l4, l l for the reception of: concrete to further interlock thetwo.

The. construction of the. illustrated embodiment has been set forth infull. detail because it is that practical embodiment which it isbelieved will attain most effectively the objects of the invention. Itwill. be understood however that such details are. not to. beconsidered. as essential un-- less enpnessl;- so stated in the claims.

I claim: 7

1. In a road drainage catch basin, in combination, a pair of concreteside walls defining the lateral limits of the catch basin, a concretefront wall presenting its upper edge.- substantially level with the roadsub-grade, a concrete sidewalk slab integrally tied with said side wallsto cover the catch. basin, and a curb inlet casting having a base whichis: disposed at the upper edge of said front wall of the catch basin,and a pair of end walls each of which is outwardly inclined to su-btendan obtuse angle with the front wall of the casting which issubstantially coplanar with the front face of said front wall of thecatch basin, the lower portions of the end walls being angularl'ydisposed within the side walls of the catch basin and the upper portionsthereof being angularly disposed within said sidewalk slab.

2. A device as characterized in claim 1, wherein said end walls haveopenings therethrough in the separation plane between said upper andlower portions thereof for the reception of concrete to increase thebonding of the curb casting with adjacent surfaces.

3. In a road drainage catch basin, in combination, a pair of concreteside walls defining the lateral limits of the catch basin, a concretefront wall presenting its upper edge substantially level with the roadsub-grade, a concrete sidewalk slab on the said side walls to cover thecatch basin, and a curb inlet casting having a base which is disposed atthe upper ed'ge of said front wall of the catch basin, and a pair of endwalls each of which is outwardly inclined to subtend an obtuse anglewith the front wall of the casting which is substantially coplanar withthe front face of said front wall of the catch basin, said end wallsbeing triangularly shaped and presenting their apices rearwardly in theseparation plane between the sidewalk slab and the basin side walls todefine upper portions which are angularly disposed within the sidewalkslab and lower portions which are disposed within said side walls.

4. A road drainage catch basin as characterized in claim 3 wherein saidend walls have openings substantially in the plane of said apices forthe reception of concrete to increase the bOndil'lg of the curb castingwith adjacent surfaces.

5. Ina; road drainage catch basin, in combination, a pair of concreteside walls defining the lateral limits of the catch basin, a concretefront wall presenting its upper edge substantially level with the roadsub-grade, a concrete sidewalk slab.

integrally tied with said side walls to cover the catch basin, and acurb inlet casting having a base. which. is-disposed at the upper edgeof said front wall of the catch basin, a plurality of partitions and apair of end walls each of which is outwardly inclined to subtend anobtuse angle with the front wall of the casting which is sub stantiallycoplanar with the front face of said front wall of the catch basin, saidend walls andpartitions being triangularly shaped and presenting theirapices rearwardly in the separating plane between the sidewalk slab andthe basin side walls to define upper portions which are angularlydisposed within the sidewalk slab when it is poured and lower portionswhich are angularly disposed within the side walls of the catch basinwhen theyare poured.

6. A curb inlet casting for a road drainage catch basin which iscomprised of a pair of concrete side walls defining the lateral limitsof the catch. basin, a concrete front wall presenting its upper edgesubstantially level with the road sub grade, and a concrete sidewalkslab to cover the catch basin; said curb inlet casting having a flatbase to be disposed at the upper edge of said front wall of the catchbasin, and a pair of end walls each of which is outwardly inclined tosubtend an obtuse angle with the front wall of the casting which will besubstantially coplanar with the front face of the front wall of thecatch basin, the end walls being of a vertical dimension so that thelower portion of the end walls will be disposed in the side walls of thecatch basin when they are poured and the upper portions thereof will bedisposed within the sidewalk slab when it is poured. I

'7. A curb inlet casting as characterized in claim 6, wherein said endwalls have openings therethrough in the separation plane between saidupper and lower portions thereof for the reception of concrete toincrease the bonding of the curb casting with adjacent surfaces.

8'. A curb inlet casting for a road drainage catch basin which iscomprised of a pair of concrete side walls defining the lateral limitsof the catch basin, a concrete front wall presenting its upper edgesubstantially level with the road subrade, and a concrete sidewalk slabto cover the catch basin; said curb inlet casting having a flat base tobe disposed at the upper edge of said front wall of the catch basin, aplurality of partitions and a pair of end walls each of which isoutwardly inclined to subtend an obtuse angle with the front wall of thecasting which will be substantially coplanar with the front face of thefront wall of the catch basin, the end walls and partitions beingtriangularly shaped and presenting their apices rearwardly in theseparating plane between the sidewalk slab and the basin side walls todefine upper portions which are angularly disposed within the sidewalkslab.

9. A curb inlet casting as characterized in claim 8, wherein saidendwalls have openings therethrough in the separation plane between saidupper and lower portions thereof for the reception of concrete toincrease the bonding of the curb casting with adjacent surfaces.

10. A curb inlet casting-"for a road drainage catch basin which iscomprised of a. pair of concrete side walls defining the lateral limitsof the catch basin, a concrete front wall presenting its upper edgesubstantially level with the road subgrade, and a concrete sidewalk slabto cover the catch basin; said curb inletcasting having a base to bedisposed at the upper edge of said front wall of the catch basin, aplurality of partitions and a pair of outwardly inclined end walls reachof which subtends an obtuse angle with the front wall of the castingwhich will be substantially coplanar with the front face of the frontwall of the catch basin, the end walls and the partitions being solocated with reference to the base and being of a vertical dimension sothat the lower portion of the end walls will be disposed in the sidewalls of the catch basin when theyqare poured and the upper portionsthereof and" of the partitions will be disposed within thesidewalk slabwhen it is poured.

DE WITT S. CROCKER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name Date H Crocker June 14, 1949 Number

